清理activiti工作流数据

1. DELETE FROM act_hi_detail;
2. DELETE FROM act_hi_comment;
3. DELETE FROM act_hi_identitylink;
4. DELETE FROM act_hi_procinst;
5. DELETE FROM act_hi_varinst;
6. DELETE FROM act_hi_taskinst;
7. DELETE FROM act_hi_actinst;
8. DELETE FROM act_ru_identitylink WHERE 1=1;
9. DELETE FROM act_ru_task;
10. DELETE FROM act_ru_execution;
11. DELETE FROM act_re_procdef;
12. DELETE FROM act_ge_bytearray;
13. DELETE FROM act_re_deployment;